Electrical apparatus



'1. "11113731, 1928. I C. W. WYMAN ELECTRICAL APPARATUS Filed Dec. 29,1924 Patented July 3l, 1928.

UNITED STATES I 1,679,142 PATENT OFFICE.

CHARLES W.'WYMAN, F CLARE-MONT, NEW HAMPSHIRE, ASSIG-NOB TO SULLIVANMACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

ELECTRICAL APPARATUS.

Application filed December 29, 1924; Serial No. 758,755.

This invention relates to electrical-apparatus.

It has for its object to provide an improved electrical apparatus. Afurther object is to provide an improved fuse container especiallyadapted for use as a combined insulated trolley clip handle and fusecontainer such as is commonly used in mines where the operator holds thetrolley in his hands and applies the same to the trolley wire wheneverit is desired to transmit electrical energy to the mining apparatuswhich is being driven. A still further object is to provide in myimproved trolley clip handle and fuse container improved means wherebythe fuse member may be readily assembled within its container and whenassembled Wlll be prevented from having transmitted thereto anysubstantial torsional eflects which would be caused by the trailing wireto which the fuse is connected, it being understood that the operator inhandling my device may turn' the same in his hand result-- ing in thetendency to twist the trailing wire. It will of course be understoodthat the connecting portions of the fuse element are relatively thin andaccordingly may be twisted ofi relatively easy. A still further and morespecific object is to provide an improved slot 30 arrangement within thecombined handle and fuse container, which slot will longitudinallyreceive a member to which the wire of the trailing cable and one end ofthefuse is connected and which is preferably rectangular in transversesection in order that it may properly resist any tendency to turn.Another object is to provide .improved means for guiding the connectingmember into said slot when the device is assembled.

In the accompanying drawings I have shown for purposes of illustrationone form and a modification which my invention may assume in practice.

In these drawings,

Fig. 1 is a side elevation partly broken away to show details ofconstruction.

Fig. 2 is a vertical longitudinal section on In the main illustrativeembodiment of my invention I have shown a combined trolley clip handleand fuse container comprising an insulating memberl having a fusechamher 2 intermediate its ends. The chamber 2 terminates in a bore 3withln which a suitable sleeve or bushing 4 is fitted having its inneredge 5 turned into the member 1 ad acent an enlarged portion 6 formed onthe outer surface thereof. The portion 6 .provides a suitable abutmenttolimit the bined container and handle member is a fuse 11 havingrelatively thin connecting portions 12 and 13. The portion 13 isconnected to a usual type of plug 1 1 which carries a trolley clip 15and suitable latch mechanism 16 having portions which are adapted to bepressed inwardly from transverse openings 17 in order to allow removalof the member 14. This construction does not per se form a part of thepresent invention, being the subject matter of my copending applicationSer. No. 550,893, filed April 8, 1922. Projecting rearwardly from themember 14 is a transverse lug 18 to which the connecting portion 13 isattached by a screw 19 or other suitable means. Disposed at the oppositeend of the fuse 11 and adapted to be received within the slot 9 betweenthe walls 10 is a rectangular shaped connecting element 21 having itsfront portion cut away to form an inwardly projecting boss 22 to whichthe connecting portion 12 of the fuse is fastenedas by a screw 23similar to the screw 19, although it will be understood that anysuitable means may be used to connect the respective ends of the fuse totheir respective connecting elements. A bore .24is formed in the rearend of the member 21 to receive the wire of a suitable trailing cable 25extending through the opening 8 and which conducts electrical energy toany suitable mining apparatus desired. Any suitable means may be used tofasten the wire of the cable to the member 21, which means hereinspecifically comprises set screws 26. It will be noted that the element21 could be formed from rectangular bar stock with the notch and holesmade therein.

In the modified form of my improved slot arrangement shown in Fig. 5 thesame comprises the usual fuse chamber 2 and opening 8 througl'i whichthe cable 25 extends, while the connecting portion between the opening 8and said chamber comprises a slot 9 bounded by parallel surfaces 30 fromwhich diverging guiding walls 31 extend, it being noted that in thisform the surfaces 30 will provide a greater bearing surface for themember 21 in case the same has any tendency to turn as before explained.

The following description of the mode of operation and assembly of thedevice is applicable to either form. The process of assembly consists infirst inserting the cable 25 through the opening 8 and out through theopposite open end of the handle 1, it being assumed that the fuse 11 andmember 14 are not as yet attached. The fuse .and the connector element21 will then be connected to the wire ofthe cable by the set screws26'after which the fuse assembly will be inserted within its container.When the portion 21 reaches the inclined surface 10, if the member 21should be slightly angled relative to said surfaces, the latter willtend to rotate the member 21 as it moves to its final position. Then thelatch 16 has been properly' seated within the opening 17 the outermostcorner of the member 21 will be disposed adjacent the mutually closestportions of the surfaces 10 as clearly shown in Fig. 1. Thisrelationship of the respective elements is such that the member 21cannot be turned any substantial amount due to lit) any tendency of thecable 25 to twist, the result being that the relatively thin elements 12and 13 will be safe from any danger of breakage.

One of the particular advantages which my improved device offers is thatrelatively few parts must be machined, thus allowing just the usualcastings to be used in their castform. For instance, the handle member 1can be suitably formed out of plastic material with the surfaces 10formed therein. The only machine operations necessary on the elements 18and 21 are tapping the holes for receiving the screws 19 and 23 anddrilling suitable openings for the latch 16 and trolley clip 15 and thewire of the trailing cable 25. The peripheral surface- ,of the member'14 can also'be machined if desired in order to provide a snug slidingfit within the bushing. The surfaces upon which the connecting elements12 and 13 are disposed can-also be machined if desired.

It will on the whole, though, be obvious that relatively few machineoperations are necessary, thus providing an extremely cheap but"nevertheless rugged trolley clip handle and fuse container and onewhich affords every safety to the operator and to the fuse elementswhich are usually of a relatively Weak nature.

WVhile I have in this application specifically described one form and amodification which my invention may assume in practice, it will beunderstood that these forms are shown for purposes of illustration andthat the invention may be modified and embodied in various other formswithout departing from its spirit or the scope of the appended claims.

WVha-t I claim as new and desire to secure by Letters Patent is:

1. A combined trolley clip handle and fuse container having a fusechamber therein provided with an opening leading therefrom, andsubstantially flat diverging walls extending in the same generaltransverse direction connecting the walls of said opening and chamber.

2. A combined handle and fuse container comprising a hollow tubularmember having a radial flange and having an'opening at one end thereof,a bushing lining thefwalls of said member adjacent said opening andhaving an edge turned into a recess in the walls of said member, saidflange being located adjacent said recess, closing means received insaid opening, a member carried thereby adapted for connection with atrolley wire, and locking means for said closing means having lockingengagement with said bushing.

3. A connection adapted for use between the wire of a trailing cable anda fuse comprising an elongated member whose cross section issubstantially rectangular, said member having a recessed portion at oneend, thereof to receive a fuse connecting portion and an. openingextending longitudinally through said member terminatimg adjacent saidrecess to receive a wire of a trailing cable.

4. A combined trolley clip handle and fuse container having a fusechamber formed therein, a fuse insertible in said chamber through anopen end thereof and having contact members secured thereto at itsopposite ends, a connector member secured to the fuse contact memberopposite said open end and having a non-cylindrica1 portion. the wallsof said chamber adjacent the end opposite said open end being formed forcooperation with said non-cylindrical portion to prevent relativerotation between said connector member and handle, said connecter memberprovided with means for connection to a trailing cable, means forclosing said open end of said chamber.

' tangular in cross section, .the walls of said and means carried bysaid' closing means for connection to a trolley wire.

5. A combined 'tr'olley clip, handle and fuse container having a fusechamber formed therein, a fuse insertible in said chamber through anopen end thereof and having contact members secured thereto at its 0posite ends, a connector member secured to the fuse contact memberopposite said open end and having a portion reccham'ber adjacent the endopposite said open end being formed for cooperation with saidrectangular portion to prevent relative rotation. between said connectormember and handle, said connector member provided with means for closingsaid 0 11 end of said chamber, and means carried by said closing meansfor connection to 'a trollev wire.

6. A combined trolley clip handle and fuse container having a fusechamber formed therein, a fuse insertible in said chamber through anopen end thereof and having contact members secured thereto at itsopposite ends, a connector member secured to the fuse contact memberopposite said open end and havin a non-cylindrical portion the walls ofsai chamber adjacent the end opposite said open end being formed forcooperation with said non-cylindrical portion to position said connectormember and fuse oninsertion thereof into said handle and to hold thesame in nonrot'ative relation therewith, said connector, member providedwith means for connection to a trailing cable, means for closing saidopen end of said chamber, and'means carried by said closing means forconnection with a trolley wire. a

7. A combined trolley clip handle and fuse container having a fusechamber ends,

said terminals and formed therein, a fuse .insertable in said chamberthrough an open end thereof and having contacts projecting therefrom atits opposite ends, a connector member attached to one of the fusecontacts, and cooperating means on said connector member and the wallsof saidchamber for preventing relative rotation between said connectormember and handle.

8. A combined trolley clip and fuse container having a fuse chamberformed there in, a fuse insertable in said chamber through an open endthereof and having contacts projecting therefrom at its opposite ends, aconnector member attached to one of the fuse contacts, an electricalconductor extending into said chamber and secured to said connectormember, and cooperatin means carried by said connector tainer forpreventing a twisting movement belng imparted to said -.fuse contactfrom said conductor.

9.'A combined trolley clip handle and fuse. container having 'a fusechamber formed therein, a fuse insertable in said chamber through an 0en end thereof and having contacts projecting therefrom at the oppositeends, connector terminals attached to' said contact members at theopposite oneof said terminals being adapted for connection to a trolleycontact member and the other of said terminals being adapted forconnection with a supply cable, andcooperating means carried by each ofthe walls of said container for preventing a relative twisting movementbetween said terminals and fuse. t In testimony whereof I aflix mysignaure.

CHARLES W..WYMAN.

member and the interior walls of said con-

